Bauer, Raymond A., author
Harvard University Press, 1952; 1959
Buku Teks
edited by Alexander Dallin, Gail W. Lapidus
Westerview Press, 1991
Buku Teks
Hough, Jerry F.
The Brookings Institution, 1980
Buku Teks
Brzezinski, Zbigniev K., author
Frederick A. Praeger, 1962
Buku Teks
Frederick A, Praeger; George Allen and Unwin Ltd., 1964
Buku Teks